Medical successive magnetic pulse generation device

Abstract

A smaller-sized, more lightweight, and power-saving successive magnetic pulse device is provided. A discharging circuit section K is configured by connecting, in series in a loop, a magnetic therapy pulse coil 6 configured to generate an eddy current in a target part 3, a charging / discharging capacitor 4, and a switching semiconductor element 7 configured to supply a discharge current from the charging / discharging capacitor 4 to the pulse coil 6. A step-up transformer 1 includes a primary-side coil 1a connected to an AC power supply 2 and a secondary-side coil 1b connected to input terminals 5a of a full-wave rectifying circuit 5. A control unit 8 is connected to a switching semiconductor element 7 and controls conduction timing of the switching semiconductor element 7. The full-wave rectifying circuit 5 has output terminals 5b connected to both terminals P1 and P2 of the charging / discharging capacitor 4, respectively. An inductor 9 is connected between the output terminal 5b of the full-wave rectifying circuit 5 and the terminal P1 of the charging / discharging capacitor 4.

Description

TECHNICAL FIELD[0001]The present invention relates to a medical successive magnetic pulse generation device for causing sustained great contraction in muscles by stimulating peripheral nerves with successive magnetic pulses.BACKGROUND ART[0002]A pulse current is used in wide industrial fields, and many products including industrial high-voltage pulse devices, such as an electric dust collector, a plasma generator, and a laser, and medical low-frequency therapeutic devices for moving muscles with a weak pulse current, have been put into practical use. Many pulse currents for industrial equipment are characterized by a high voltage (3 to 10 kV), a low current (several milliamperes to several amperes), a high frequency (30 to 100 kHz), and a narrow pulse width (1 to 10 μs). The reason for this is that as the voltage is higher and the pulse width is narrower, higher energy can be generated momentarily.[0003]Regarding such a pulse power supply for the purpose of generating a sharp high-v...

AI Technical Summary

Benefits of technology

The present invention solves the problem of higher charge current that hinders the generation of strong magnetic pulses for peripheral nerve stimulation from the medical magnetic pulse generation device without using bulky and power-consuming components. The device becomes smaller and lighter and can be used for special therapy by changing the condition for generating a magnetic field, improving the therapeutic effect and replacing conventional electric stimulation therapy with magnetic stimulation that causes less pain and is easily handled.

Problems solved by technology

The low-frequency therapeutic device can cause muscle contraction with low electric power, and thus the size of the device can be very small.

However, it takes time and effort to attach the electrode to the skin, and in the case of causing great muscle contraction, there is a problem that great pain is involved, since electric stimulation is an electric shock.

If the electrode is buried under the skin, the problem of pain can be avoided, but there is a problem that purulence is likely to occur from a portion where an electrode wire contacts the skin.

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